AttCool – Thermal Barrier Coating System (TBCS)

Welcome to AttCool – Thermal Barrier Coating System

AttCool is designed principally for use on roofs. It is applied by spraying onto the surface.

The product reduces heat gain into a roof using two modes of action: low thermal conductivity and heat reflection. Practical results on a large galvanized iron roof structure indicated a temperature decrease of 8°C within the working area compared to measurements prior to coating application.

AttCool is a Thermal Barrier Coating System designed principally for use on roofs. This does however not mean that other surfaces cannot be coated. It is a waterborne composition with low odor and applied by spraying or brushing onto the surface. The product reduces heat gain into a roof or surface using two modes of action: low thermal conductivity and heat reflection. Practical results on a large galvanized iron roof indicate a temperature decrease of 8°Cwithin the working area beneath the roof (a warehouse). The ambient conditions under the roof were noticeably improved.

The low thermal conductivity means that it can also be used as a ceiling paint over painted or unpainted ceiling boards, especially on ceilings directly beneath the roof or attic. The thermal resistance properties result in typical temperature reduction properties of 4 – 6 degrees compared to conventional ceiling paints. The ambient temperature within the room may drop 2-4 degrees. Rooms treated with AttCoolalso warm up quicker in winter, as less heat is lost through the ceiling.

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Below are temperature recordings that were done at the end of January 2012 at Longbeach Mall, Noordhoek.

The temperatures were recorded over a period of four days, using three temperature loggers.
Temperatures were recorded in the following positions:

Outdoor temperature, in a shaded, well ventilated space

Indoors, about 300mm below an untreated roof

Indoors, about 300mm below a section of roof that had been treated with the heat reflective coating

The results can be tabulated as follows:

28 January

29 January

30 January

31 January

Temp °C

Temp °C

Temp °C

Temp °C

Outdoors

28,5

28,5

31,5

31,0

Standard Roof

36,0

35,5

35,5

34,5

Treated Roof

25,5

25,3

25,8

25,6

The temperatures shown above are the peak temperatures measured during the course of each day.

The results show the following:

During the day, the temperature below a standard, untreated roof can be up to 7°C hotter than the outdoor temperature

By applying the heat reflective coating to the same roof, the temperature below the roof can be as much as 10°C cooler than the standard, untreated roof.

This cooler temperature significantly reduces the load on the air conditioning system serving the spaces below.

Our experience has shown that the energy consumed by the AC system can, in some months and under certain circumstances, be reduced to less than half by the application of this type of heat reflective coating.

While each case should be considered on its own merits, the economic payback for this type of treatment is usually very favourable and well worth considering.